"is best done" is correct and usable in written English. You can use it when you want to emphasize that a certain action is the most effective or prudent approach. For example: "Cleaning the windows regularly is best done on a sunny day, to take advantage of the natural light.".
Storytelling is best done by storytellers.
(This request is best done in writing, by certified mail).
Justice is best done by the states responsible.
No … I think my dancing is best done privately.
This is best done by a professional upholsterer.
But the listening is best done in concert.
That is best done by helping people help themselves.
Thanks to Ludwig my first paper got accepted! The editor wrote me that my manuscript was well-written
Listya Utami K.
PhD Student in Biology, Bandung Institute of Technology, Indonesia